Patent US4943816A successfully refreshed from Google Patents.
US4943816A
Expired / Lapsed
US
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High quality thermal jet printer configuration suitable for producing color images
Assignee: IBM Information Products Corp
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Filing: 1989-06-14
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Granted: 1990-07-24
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Expires: 2009-06-14
Abstract
Abstract A printer suitable for color printing which uses an ink jet printhead in which the marking fluid contains no dye so that a latent image of the desired print pattern is produced in the form of moistened spots directly on the print medium. The latent image is then developed by applying some colored powder to the print medium, and the developed image is then fixed to the print medium to produce a visible image of the desired print pattern.
Inventors
- 👤 Alfred H. Sporer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:25
CPC Classifications
G; G03; G03G; G03G17/00; G03G15/00; G03G15/01; G03G15/0105; G03G15/011
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
109 words
A printer suitable for producing color images comprising: an ink jet printhead for selectively producing drops of a dyeless marking fluid consisting essentially of a mixture of water and a glycol ether; an image receiving substrate; means for controlling said ink jet printhead to selectively eject said dyeless marking fluid to produce a fluid image of a desired pattern upon said substrate; a plurality of roll developing means for developing said fluid image on said substrate while still moist to produce a visible image on said substrate; and means for fixing said developed image to said substrate to produce a permanent image of the desired pattern on said substrate.
Claim 2
Dependent Claim
109 words
A printer suitable for producing color images comprising: an ink jet printhead for selectively producing drops of a dyeless marking fluid consisting essentially of a mixture of water and a glycol ether; an image receiving substrate; means for controlling said ink jet printhead to selectively eject said dyeless marking fluid to produce a fluid image of a desired pattern upon said substrate; a plurality of roll developing means for developing said fluid image on said substrate while still moist to produce a visible image on said substrate; and means for fixing said developed image to said substrate to produce a permanent image of the desired pattern on said substrate.
Claim 3
Dependent Claim
16 words
The printer of claim 1 wherein said ink jet printhead comprises a drop-on-demand ink jet printhead.
Claim 4
Dependent Claim
18 words
The printer of claim 2 wherein said drop-on-demand ink jet printhead comprises a thermal drop-on-demand ink jet printhead.
Claim 5
Dependent Claim
20 words
The printer of claim 1 wherein said roll developing means for developing said fluid image comprises an impression developer apparatus.
Claim 6
Dependent Claim
33 words
The printer of claim 4 wherein said plurality of roll developing means comprises one roll developing means to produce black and one roll developing means to produce each of the three primary colors.
Claim 7
Dependent Claim
20 words
The printer of claim 1 wherein said roll developing means for developing said fluid image comprises a jump developer apparatus.
Claim 8
Dependent Claim
33 words
The printer of claim 6 wherein said plurality of roll developing means comprises one roll developing means to produce black and one roll developing means to produce each of the three primary colors.
Claim 9
Dependent Claim
33 words
The printer of claim 1 wherein said dyeless marking fluid consists essentially of a mixture of water and a material selected from the group consisting of ethylene glycol, diethylene glycol and polyethylene glycols.
Claim 10
Dependent Claim
27 words
The printer of claim 8 wherein said dyeless marking fluid consists essentially of a mixture of fifty percent by weight of water and the balance ethylene glycol.
Claim 11
Dependent Claim
109 words
A printer suitable for producing color images comprising: an ink jet printhead for selectively producing drops of a dyeless marking fluid consisting essentially of a mixture of water and a polyhydric alcohol; an image receiving substrate; means for controlling said ink jet printhead to selectively eject said dyeless marking fluid to produce a fluid image of a desired pattern on said substrate; a plurality of roll developing means for developing said fluid image on said substrate while still moist to produce a visible image on said substrate; and means for fixing said developed image to said substrate to produce a permanent image of the desired pattern an said substrate.
Claim 12
Dependent Claim
109 words
A printer suitable for producing color images comprising: an ink jet printhead for selectively producing drops of a dyeless marking fluid consisting essentially of a mixture of water and a polyhydric alcohol; an image receiving substrate; means for controlling said ink jet printhead to selectively eject said dyeless marking fluid to produce a fluid image of a desired pattern on said substrate; a plurality of roll developing means for developing said fluid image on said substrate while still moist to produce a visible image on said substrate; and means for fixing said developed image to said substrate to produce a permanent image of the desired pattern an said substrate.
Claim 13
Dependent Claim
32 words
The printer of claim 10 wherein said dyeless marking fluid consists essentially of a mixture of water and a material selected from the group consisting of glycerol, ethylene, diethylene and propylene glycols.
Claim 14
Dependent Claim
34 words
The printer of claim 11 wherein said dyeless fluid consists essentially of a mixture of fifty percent by weight of water and the balance a water miscible high boiling polyhydric alcohol, glycol or ether.
Claim 15
Dependent Claim
16 words
The printer of claim 10 wherein said ink jet printhead comprises a drop-on-demand ink jet printhead.
Claim 16
Dependent Claim
19 words
The printer of claim 13 wherein said drop-on-demand ink jet printhead comprises a thermal drop-on demand ink jet printhead.
Claim 17
Dependent Claim
20 words
The printer of claim 10 wherein said roll developing means for developing said fluid image comprises an impression developer apparatus.
Claim 18
Dependent Claim
33 words
The printer of claim 15 wherein said plurality of roll developing means comprising one roll developing means to produce black and one roll developing means to produce each of the three primary colors.
Claim 19
Dependent Claim
20 words
The printer of claim 10 wherein said roll developing means for developing said fluid image comprises a jump developer apparatus.
Claim 20
Dependent Claim
33 words
The printer of claim 17 wherein said plurality of roll developing means comprises one roll developing means to produce black and one roll developing means to produce each of the three primary colors.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-23 | 1994-01-22 | 1994-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-23 | 1998-01-22 | 1998-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-23 | 2002-01-22 | 2002-07-24 | $7700.00 | Window Closed / Lapsed |